CVE-2026-76854 Netcore NR255-V 1.5.130703 Sensitive Information Disclosure via l7_web_auth_user_show.cgi
Attackers can query a specific CGI script on Netcore NR255-V routers to retrieve captive-portal user credentials, compromising network access confidentiality.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76854?
CVE-2026-76854 is a high-severity vulnerability in Netcore NR255-V, published on 15 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Netcore NR255-V version 1.5.130703 contains a sensitive information disclosure vulnerability in l7_web_auth_user_show.cgi related to captive-portal credential handling. Attackers can query this component to obtain captive-portal user credentials, compromising confidentiality of authenticated network access.
Weakness: CWE-522
Which versions are affected by CVE-2026-76854?
How do I fix CVE-2026-76854?
No fix has been published for CVE-2026-76854 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-76854 being exploited?
There is no known exploitation of CVE-2026-76854 in the wild and no public exploit code.
Sources
Also known as GHSA-qh3g-h4q9-2w2q.